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3. Contributions to an Up-Date of the Red List of Wild Species from The Scientific Annals of the Danube Delta Institute Tulcea, Romania vol. 20 2014 Section I. Biodiversity, taxonomy, nature conservation Research article pp. 17 – 34 doi: 10.7427/DDI.20.03 Contributions to an up-date of the Red List of wild species from the 3. Danube Delta Biosphere Reserve. Part II. Reptiles TÖRÖK Zsolt Csaba Danube Delta National Institute for Research and Development: 165 Babadag street, Tulcea - 820112, Romania; e-mail: [email protected] BSTRACT.Up to the present in the Danube Delta Biosphere Reserve (DDBR) there were recorded 12 native reptile species. The first Red List of the wild species from DDBR was drafted in 1999 and printed in 2000. Based on the results of investigations carried out since A2000 and taking into account the developments related to criteria for conservation status of wild species (on world-wide level, on European continental level, on EU level and on national level), the present work provides details on the proposals to consider the following conservations status to amphibians occurring in the DDBR: Testudo graeca (rare species in the DDBR) – Vulnerable status; Emys orbicularis (relatively common species in the DDBR) - Vulnerable status; Lacerta agilis (relatively common species on some marine levees) - Least Concern status; Lacerta trilineata (a rare species in the DDBR) - Vulnerable status; Lacerta viridis (rare species in the DDBR) - Least Concern status; Podarcis tauricus (occurs along the continental limit of the DDBR and on few marine levees of the lagoonary area) - Least Concern status; Eremias arguta (occurs only on the main marine levees) - Threatened status; Coluber caspius (rare species in the DDBR) - Vulnerable status; Coronella austriaca (rare species in the DDBR) - Vulnerable status; Natrix natrix (relatively common species in DDBR) - Least Concern status; Natrix tessellata (relatively frequent in the lagoonary area and rare in the proper Danube Delta) - Vulnerable status; Vipera ursinii (rare species in the DDBR) - Critically endangered status. Key words: reptiles, conservation status, Red List, Danube Delta Biosphere Reserve, Romania INTRODUCTION Shortly after the establishment of the Danube Delta Biosphere Reserve (further referred to as DDBR) [74], starting with 1991 there was carried out a multy-annual wild-species inventory [46], the respective investigations being extensive ones in the first few years ([32]; [45]), but up to 1998 they were performed systematically enough to provide the necessary scientific background for the first draft of a Red List on wild plants and animals of the DDBR - the document being compiled in 1999 (with the support of the Romanian central authority for scientfic research) by the specialists of Danube Delta National Institute for Research and Development and external experts of the mentioned institute. The respective material was printed in 2000 and included details on 11 species of reptiles from DDBR [47]. Up to the present there were published Red Lists related to few other protected areas from Romania. According to our knowledge, only in two cases were printed Red Lists: in 2006 for Măcin Mountains National Park [66] and in 2013 for Rodnei Mountains National Park (which is also a Biosphere Reserve) [24]. Furthermore, there were Red List proposals for various areas, as the Criș river basin [49] or the valley of the middle and lower sections of the Prut river valley [81]. Since 2000, in the DDBR there were carried out various qualitative (faunistical) [54], quantitative ([30]; [58]; [71] etc.) and even genetical studies ([18]; [19]; [20] etc.) related to the reptiles. Also, standardization of the methods for assessing the reptile populations was performed at national level [65], respectively for the DDBR area [61]. Furthermore, there were changes in the criteria to assess the conservation status of the species [83], followed by works adapting the respective criteria to continental [12] or national level ([22]; [23]). Consequently, the present paper shows the results of analyses aiming to up-date the section related to conservation status of reptile species from the DDBR (a proposal for up-dating the status of amphibians from DDBR was published in 2013 [62]). MATERIALS AND METHODS In the frame of projects developed in 2009 - 2013 period (the official titles of the projects are provided at the ”Acknowledgement” section of the present paper) there were analysed: - the results of investigations on reptiles, carried out since 2000 in the DDBR area; - the developments related to criteria for conservation status of reptiles – on World level and an European level; - the proposals on conservation status of reptile species at country (Romania) level. Taking into account the above mentioned elements, there were developed proposals for the current conservation status of reptile species from DDBR. Related to two species of reptiles from the DDBR area there are debates related to the taxonomic status of the Large Whip Snake and the Steppe Viper. In case of the Large Whip Snake, the populations inhabiting a region which includes some sites from the southern parts of the DDBR were considered as belonging: a). (in 1921) to subspecies Zamenis gemonensis caspius Iwan – [38]. We have to note that ”Iwan” is not the name, but the given name of the Russian naturalist Иван Иванович ЛЕПЕХИН (Ivan Ivanovich LEPECHIN) who mentioned (at pages 513 and 514 of his journal published in 1771 [36]) a whipsnake found 9 – 19 August 1769 in the steppe areas from Yaitsky (currently Uralks, L-ISSN: 1842 - 614X 17 www-address of the journal: http://www.ddni.ro/index.php?page_id=194&siteSection=6&sectionTitle=Scientific%20Annals Scientific Annals of the Danube Delta Institute Tulcea, Romania vol. 20 2014 in Kazakhstan), also providing a short desciption of the specimen, in Latin (”Coluber, inferne totus flavus, superne lineis flavis fuscisque alternatim positis distinctus, scutis abdominalibus CXCVIII, squamis subcaudalibus in una serie C” - page 514 in [36]), respectively a drawing of the snake (Fig. 1.); b). (in 1923) to subspecies Coluber caspius caspius (Gmelin, 1789) – [39]. Actually, Johann Friedrich Gmelin described Coluber caspius (Fig. 2.), mentioning that Lepechin indicated as ”Coluber” the specimen recorded nearby the Caspian Sea shore (see details at position No. 298 at page 1112 in [17]); b). (in 1961) to subspecies Coluber jugularis caspius Gmelin, 1789 – [16]; c). (after 1990, generally) to subspecies Coluber caspius Gmelin, 1789 – [32]; d). (proposed after 2000) to species Dolichophis caspius (Gmelin, 1789) ([40]; [41]; [42]). Taking into account that the most recent, nature protection related regulations are referring to the Large Whipe Snake as Coluber caspius ([75]; [77]), in the present paper we will also will use Coluber caspius as scientific name of the Large Whipe Snakes occurring in the DDBR area. Fig. 1. Drawing of a Large Whip Snake – recorded at Uralsk Fig. 2. Copy of the section considered as being the first by И. ЛЕПЕХИН [36]. scientific description of Coluber caspius [17]. Fig. 4. Areas populated by species of Vipera genus – Fig. 3. Distribution of Vipera-populations – according to Raoul according to Vancea and Ionescu, 1954. Călinescu. Note. 1 – distribution area of Vipera ursinii ursinii; 2 – distribution Note. 1 – Vipera ammodytes ammodytes; 2 – Vipera ammodytes area of Vipera ursinii renardi; 3 – zones where the distribution areas montandoni; 3 – Vipera renardi; 4 – Vipera ursinii. Source of Vipera ursinii ursinii and of Vipera ursinii renardi are overlapping. background map: Călinescu, 1931 [6]. Source of background map: Vancea and Ionescu, 1954 [67]. In case of the Steppe Viper, the populations inhabiting a region which includes some sites from the southern parts of the DDBR were considered as belonging: a). (in 1912) to species Vipera berus – the first viper specimen (probably captured in the first decade of the XXth century) reported from the Danube Delta was considered as being Adder (V. berus) [1]; b). (in 1931) to subspecies Vipera ursinii macrops Méhely, 1911 – R. Călinescu, after analysing the respective biological materials (assumed to be the ones collected in the Danube Delta), concluded that the specimen (preserved with an Adder in a jug labeled with ”Danube Delta”) seems to belong to subspecies V. ursinii macrops, mentioning that the examined specimen was may be captured outside of Romania – for this reason Călinescu did not even indicate the presence of vipers in the Danube Delta or in the Razim-Sinoe the lagoonary area (Fig. 3.) [6]; c). (in 1937) to species Vipera renardi (Christoph, 1861) – M. Băcescu studied some specimens (captured in the Danube Delta, in June 1935 and July 1937) and stated that the respective spakes are Vipera renardi, although some of their morphological L-ISSN: 1842 - 614X 18 www-address of the journal: http://www.ddni.ro/index.php?page_id=194&siteSection=6&sectionTitle=Scientific%20Annals Scientific Annals of the Danube Delta Institute Tulcea, Romania vol. 20 2014 features is a mixture between the characteristics that are specific to V. renardi and the ones specific to V. ursinii (Bonaparte, 1835) [3]; d). (in 1954) to an intermediate form between Vipera ursinii renardi and Vipera ursinii ursinii – Șt. Vancea and V. Ionescu considered that the Danube Delta is an area where the distribution area of subspecies Vipera ursinii ursinii is overlapping with the distribution area of subspecies V. ursinii renardi, meanwhile in the Razim-Sinoe lagoonary system there are populations belonging to subspecies
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